Wikipedia claims the vaccine only appeared in 1995 [1] or 1984 [2] (and probably later in some countries). Either way a lot of the population could not possibly

Wikipedia claims the vaccine only appeared in 1995 [1] or 1984 [2] (and probably later in some countries). Either way a lot of the population could not possibly have been vaccinated as a child. [1] https://en.wikipedia.org/wiki/Chickenpox https://en.wikipedia.org/wiki/Chickenpox [2] https://en.wikipedia.org/wiki/Varicella_vaccine https://en.wikipedia.org/wiki/Varicella_vaccine